So we recently purchased our first batch of Lenovo T400's (2765-T6U) and we are experiencing the weirdest problem. I wiped out the laptop and installed Windows XP with SP3 and install all of the respective Lenovo Drivers and utilities like the Finger Scanner, Wireless Drivers ect and the laptop is joined to our domain. But once we installed the Wireless drivers the laptops responce to an initial log on request became painfully slow and it took 1-2 minutes from the time I pressed enter after typing in my password till it actually logged on. But as soon as I uninstall the wireless drivers, this issues goes away. The T400 comes with an Intel 5100 WiFi for the wireless and I have used the newest drivers from Lenovo and Intel and I have even tracked down the factory drivers and installed those as well, but the problem continues. And when the laptop is hung, there us next to no hard drive activity and then it all comes as a burst when it times out. I have a feeling that something is timing out which is causing this delay but I cannot pinpoint it.